TFT_4DGL_Text.cpp

00001 //
00002 // TFT_4DGL is a class to drive 4D Systems TFT touch screens
00003 //
00004 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
00005 //
00006 // TFT_4DGL is free software: you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License as published by
00008 // the Free Software Foundation, either version 3 of the License, or
00009 // (at your option) any later version.
00010 //
00011 // TFT_4DGL is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU General Public License
00017 // along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 #include "mbed.h"
00020 #include "TFT_4DGL.h"
00021 
00022 //****************************************************************************************************
00023 void TFT_4DGL :: set_font(char mode) {   // set font size
00024     char command[2]= "";
00025 
00026     int w, h, fx = 8, fy = 8;
00027 
00028     command[0] = SETFONT;
00029     command[1] = mode;
00030 
00031     current_font = mode;
00032 
00033     if (current_orientation == IS_PORTRAIT) {
00034         w = SIZE_X;
00035         h = SIZE_Y;
00036     } else {
00037         w = SIZE_Y;
00038         h = SIZE_X;
00039     }
00040 
00041     switch (mode) {
00042         case FONT_5X7 :
00043             fx = 6;
00044             fy = 8;
00045             break;
00046         case FONT_8X8 :
00047             fx = 8;
00048             fy = 8;
00049             break;
00050         case FONT_8X12 :
00051             fx = 8;
00052             fy = 12;
00053             break;
00054         case FONT_12X16 :
00055             fx = 12;
00056             fy = 16;
00057             break;
00058     }
00059 
00060     max_col = w / fx;
00061     max_row = h / fy;
00062 
00063     writeCOMMAND(command, 2);
00064 }
00065 
00066 //****************************************************************************************************
00067 void TFT_4DGL :: text_mode(char mode) {   // set text mode
00068     char command[2]= "";
00069 
00070     command[0] = TEXTMODE;
00071     command[1] = mode;
00072 
00073     writeCOMMAND(command, 2);
00074 }
00075 
00076 //****************************************************************************************************
00077 void TFT_4DGL :: text_char(char c, char col, char row, int color) {   // draw a text char
00078     char command[6]= "";
00079 
00080     command[0] = TEXTCHAR;
00081 
00082     command[1] = c;
00083     command[2] = col;
00084     command[3] = row;
00085 
00086     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00087     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00088     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00089 
00090     command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00091     command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00092 
00093     writeCOMMAND(command, 8);
00094 }
00095 
00096 //****************************************************************************************************
00097 void TFT_4DGL :: graphic_char(char c, int x, int y, int color, char width, char height) {   // draw a graphic char
00098     char command[10]= "";
00099 
00100     command[0] = GRAPHCHAR;
00101 
00102     command[1] = c;
00103 
00104     command[2] = (x >> 8) & 0xFF;
00105     command[3] = x & 0xFF;
00106 
00107     command[4] = (y >> 8) & 0xFF;
00108     command[5] = y & 0xFF;
00109 
00110     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00111     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00112     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00113 
00114     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00115     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00116 
00117     command[8] = width;
00118 
00119     command[9] = height;
00120 
00121     writeCOMMAND(command, 10);
00122 }
00123 
00124 //****************************************************************************************************
00125 void TFT_4DGL :: text_string(char *s, char col, char row, char font, int color) {   // draw a text string
00126 
00127     char command[1000]= "";
00128     int size = strlen(s);
00129     int i = 0;
00130 
00131     command[0] = TEXTSTRING;
00132 
00133     command[1] = col;
00134     command[2] = row;
00135 
00136     command[3] = font;
00137 
00138     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00139     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00140     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00141 
00142     command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00143     command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00144 
00145     for (i=0; i<size; i++) command[6+i] = s[i];
00146 
00147     command[6+size] = 0;
00148 
00149     writeCOMMAND(command, 7 + size);
00150 }
00151 
00152 //****************************************************************************************************
00153 void TFT_4DGL :: graphic_string(char *s, int x, int y, char font, int color, char width, char height) {   // draw a text string
00154 
00155     char command[1000]= "";
00156     int size = strlen(s);
00157     int i = 0;
00158 
00159     command[0] = GRAPHSTRING;
00160 
00161     command[1] = (x >> 8) & 0xFF;
00162     command[2] = x & 0xFF;
00163 
00164     command[3] = (y >> 8) & 0xFF;
00165     command[4] = y & 0xFF;
00166 
00167     command[5] = font;
00168 
00169     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00170     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00171     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00172 
00173     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00174     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00175 
00176     command[8] = width;
00177 
00178     command[9] = height;
00179 
00180     for (i=0; i<size; i++) command[10+i] = s[i];
00181 
00182     command[10+size] = 0;
00183 
00184     writeCOMMAND(command, 11 + size);
00185 }
00186 
00187 //****************************************************************************************************
00188 void TFT_4DGL :: text_button(char *s, char mode, int x, int y, int button_color, char font, int text_color, char width, char height) {   // draw a text string
00189 
00190     char command[1000]= "";
00191     int size = strlen(s);
00192     int i = 0, red5, green6, blue5;
00193 
00194     command[0] = TEXTBUTTON;
00195 
00196     command[1] = mode;
00197 
00198     command[2] = (x >> 8) & 0xFF;
00199     command[3] = x & 0xFF;
00200 
00201     command[4] = (y >> 8) & 0xFF;
00202     command[5] = y & 0xFF;
00203 
00204     red5   = (button_color >> (16 + 3)) & 0x1F;             // get red on 5 bits
00205     green6 = (button_color >> (8 + 2))  & 0x3F;             // get green on 6 bits
00206     blue5  = (button_color >> (0 + 3))  & 0x1F;             // get blue on 5 bits
00207 
00208     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;    // first part of 16 bits color
00209     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;    // second part of 16 bits color
00210 
00211     command[8] = font;
00212 
00213     red5   = (text_color >> (16 + 3)) & 0x1F;               // get red on 5 bits
00214     green6 = (text_color >> (8 + 2))  & 0x3F;               // get green on 6 bits
00215     blue5  = (text_color >> (0 + 3))  & 0x1F;               // get blue on 5 bits
00216 
00217     command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;    // first part of 16 bits color
00218     command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;   // second part of 16 bits color
00219 
00220     command[11] = width;
00221 
00222     command[12] = height;
00223 
00224     for (i=0; i<size; i++) command[13+i] = s[i];
00225 
00226     command[13+size] = 0;
00227 
00228     writeCOMMAND(command, 14 + size);
00229 }
00230 
00231 //****************************************************************************************************
00232 void TFT_4DGL :: locate(char col, char row) {   // place text curssor at col, row
00233     current_col = col;
00234     current_row = row;
00235 }
00236 
00237 //****************************************************************************************************
00238 void TFT_4DGL :: color(int color) {   // set text color
00239     current_color = color;
00240 }
00241 
00242 //****************************************************************************************************
00243 void TFT_4DGL :: putc(char c) {   // place char at current cursor position
00244 
00245     text_char(c, current_col++, current_row, current_color);
00246 
00247     if (current_col == max_col) {
00248         current_col = 0;
00249         current_row++;
00250     }
00251     if (current_row == max_row) {
00252         current_row = 0;
00253     }
00254 }
00255 
00256 //****************************************************************************************************
00257 void TFT_4DGL :: puts(char *s) {   // place string at current cursor position
00258 
00259     text_string(s, current_col, current_row, current_font, current_color);
00260 
00261     current_col += strlen(s);
00262 
00263     if (current_col >= max_col) {
00264         current_row += current_col / max_col;
00265         current_col %= max_col;
00266     }
00267     if (current_row >= max_row) {
00268         current_row %= max_row;
00269     }
00270 }